4 files changed, 52 insertions, 2 deletions
diff --git a/alc/alc.cpp b/alc/alc.cpp
index 38696498..2720033e 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -75,6 +75,7 @@
 #include "alspan.h"
 #include "alstring.h"
 #include "alu.h"
+#include "async_event.h"
 #include "atomic.h"
 #include "bformatdec.h"
 #include "compat.h"
diff --git a/alc/alu.cpp b/alc/alu.cpp
index 790b8485..6ecafd09 100644
--- a/alc/alu.cpp
+++ b/alc/alu.cpp
@@ -44,13 +44,13 @@
 #include "AL/alc.h"
 #include "AL/efx.h"
 
-#include "al/event.h"
 #include "alcmain.h"
 #include "alcontext.h"
 #include "almalloc.h"
 #include "alnumeric.h"
 #include "alspan.h"
 #include "alstring.h"
+#include "async_event.h"
 #include "atomic.h"
 #include "bformatdec.h"
 #include "core/ambidefs.h"
diff --git a/alc/async_event.h b/alc/async_event.h
new file mode 100644
index 00000000..1ee58b10
--- /dev/null
+++ b/alc/async_event.h
@@ -0,0 +1,49 @@
+#ifndef ALC_EVENT_H
+#define ALC_EVENT_H
+
+#include "almalloc.h"
+
+struct EffectState;
+enum class VChangeState;
+
+using uint = unsigned int;
+
+
+enum {
+    /* End event thread processing. */
+    EventType_KillThread = 0,
+
+    /* User event types. */
+    EventType_SourceStateChange = 1<<0,
+    EventType_BufferCompleted   = 1<<1,
+    EventType_Disconnected      = 1<<2,
+
+    /* Internal events. */
+    EventType_ReleaseEffectState = 65536,
+};
+
+struct AsyncEvent {
+    uint EnumType{0u};
+    union {
+        char dummy;
+        struct {
+            uint id;
+            VChangeState state;
+        } srcstate;
+        struct {
+            uint id;
+            uint count;
+        } bufcomp;
+        struct {
+            char msg[244];
+        } disconnect;
+        EffectState *mEffectState;
+    } u{};
+
+    AsyncEvent() noexcept = default;
+    constexpr AsyncEvent(uint type) noexcept : EnumType{type} { }
+
+    DISABLE_ALLOC()
+};
+
+#endif
diff --git a/alc/voice.cpp b/alc/voice.cpp
index 6c00a6a2..15240544 100644
--- a/alc/voice.cpp
+++ b/alc/voice.cpp
@@ -34,7 +34,6 @@
 #include <new>
 #include <utility>
 
-#include "al/event.h"
 #include "alcmain.h"
 #include "albyte.h"
 #include "alconfig.h"
@@ -44,6 +43,7 @@
 #include "alspan.h"
 #include "alstring.h"
 #include "alu.h"
+#include "async_event.h"
 #include "buffer_storage.h"
 #include "core/devformat.h"
 #include "core/filters/biquad.h"